Yes, you should have coolant to and not PAST the full mark on your coolant reservoir.
〉 Answered on Aug 27th, 2014 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
You should keep a 50/50 mix of coolant and water in your vehicle. If it is showing low in the overflow, you probably need to add coolant. However, when you do, keep an eye on it for a while. If it continues to go lower, you should have the coolingsystem checked for leaks in other areas.
〉 Answered on Aug 27th, 2014 by Gail Dunn, Owner at Women's Automotive Connection
It's ok to top off with water but antifreeze is best.
〉 Answered on Aug 27th, 2014 by Gelina Aquilina, Service Advisor / Mechanic at
Hi Gordon, About you 95 Toyota Camry: Use a 50/50 mixture of coolant and water. The reservoir will read lower when the vehicle is cool. The reservoir will read higher when your vehicle is hot (been running). If you need to add wait until the vehicle is cool. Do not add when vehicle is hot. Good Luck.
〉 Answered on Aug 27th, 2014 by Maryann Croce, Owner at Croce’s Transmission Specialists